Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40
The AirTAC Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40 is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø40mm bore and 45mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ40 mm
- Full stroke45 mm
- Port sizePT1/8
- Adjuster threadM12×1.25
About the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40
The AirTAC ACQJ40X45-40 is a double-acting JIS compact cylinder featuring an external threaded stop and lock nut on the extend side. This mechanism allows you to fine-tune the extend end position directly on the machine without swapping parts. With a full stroke of 45 mm and a 40 mm adjustment window, the usable extend range is 5-45 mm. The retract stroke remains completely unaffected by this adjustment.
Because the adjuster only limits travel length and leaves piston area unchanged, the output force is identical to a standard ACQ of the same bore. At 0.5 MPa it delivers 628.3 N of push force and 527.8 N of pull force. The body includes fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions, and it features integrated sensor grooves ready for reed or solid-state switches (requires a separately ordered -S magnet model for activation).
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40 Technical Specifications
| Model | Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40 |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø40 mm |
| Full stroke | 45 mm |
| Adjuster thread | M12×1.25 |
| Port size | PT1/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M8×1.25 (F) / M14×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40 Is Used
Fixture Position Tuning
Dial in the exact clamping extend position on machining fixtures during prototype runs or material variance without machining new stop collars.
Product Changeover Stops
Rapidly adapt end-of-stroke locations on packaging lines when switching between carton sizes, using the external M12x1.25 adjuster to save setup time.
Assembly Machine Trials
Safely test different extend distances on automated assembly stations to find the optimal pressing depth before finalizing the mechanical layout.
Is the Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40 the Right Cylinder?
If 527.8 N of pull at 0.5 MPa is insufficient, consider the 50 mm bore (824.6 N pull) or drop down to the 32 mm bore (301.6 N pull) if your load is lighter. If your application never requires altering the extend endpoint, a fixed-stroke standard ACQ40 cylinder will accomplish the same task more economically. When ordering this adjustable unit, confirm the 40 mm bore, 45 mm full stroke, 40 mm window, the default female rod-end thread (M8x1.25), and whether you need the -S magnet option for position sensing.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ32~40 Adjustable Thin-Type Cylinder ACQJ40X45-40 FAQ
The usable extend range is 5-45 mm (a 45 mm full stroke minus the 40 mm adjustable window). The force is identical to a standard ACQ: 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push at 0.7 MPa, and a maximum push of 128 kgf at 1.0 MPa.
An external M12x1.25 threaded stop with a lock nut limits the extend travel, shortening the stroke without changing the piston area, so force remains the same. The retract stroke is unaffected. Deceleration is handled by fixed NBR elastomer bumpers, not adjustable air cushions, so external shock absorbers are recommended for high-speed or high-energy loads.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC ACQJ Compact Cylinders
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